Added support for loading images from external sources (HTTP/FTP).
Added support for loading images from external sources (HTTP/FTP).

minimagick/minimagick,ninjapanzer/mini_magick,probablycorey/mini_magick,gentoo/minimagick,metastudio/mini_magick,tuanmai/minimagick,felixbuenemann/minimagick,felixbuenemann/minimagick,n0nick/minimagick,imton/minimagick,mdkalish/minimagick,gentoo/minimagick,felixbuenemann/minimagick,cartermarino/minimagick,probablycorey/mini_magick,probablycorey/mini_magick,kim-company/minimagick,minimagick/minimagick,sdrew/minimagick,metastudio/mini_magick,ninjapanzer/mini_magick